[beAbU]

Roundup makes a product that looks like roll on deodorant. You literally roll it onto the leaves of the things you want to kill, and everything else remains unharmed.

I'm also a fan of glyphosphate. Nothing else works nearly as well. People who are critical of "chemicals" to control weeds have never had to deal with a weedy pavement before.

[mechanicalpulse]

Yes! I also used glyphosate to kill things growing in and around my sidewalk, driveway, steps, and curb. I've also used a propane torch for the same purposes, but it requires more effort and cannot be applied quite so selectively. It works, though, and is a good choice for anyone who would rather use a petroleum product than an herbicide.

I looked up the product you mentioned and you're right -- it does look like deodorant! It's a gel that contains glyphosate and isopropylamine salt. Neat!

[singleshot_]

Carbon Robotics sells a weed burner that works via a laser, if you’re dead set against both petrochemicals and glyphosate.

Sadly: no consumer model yet.

[LorenPechtel]

Normal propane weed burners work pretty well against weeds in areas where it's reasonable to use something like that. But they aren't good if there's anything nearby you want to protect.

[LorenPechtel]

Hey, I really like the idea! There are various palm trees around here, I keep fighting the unwelcome guests that show up. Unless caught really early they are basically impossible to pull and almost all of them show up in places I don't want to dig them out. A contact-only killer sounds like just the right thing.